I missed doing my whistle register especially to pop songs from Mariah Carey and Lisa Fischer.. And Debelah Morgan.. But hearing them made me motivate to learn whistle register especially if it's technically done in the right placement.. Whistle register also tightens up the vocal folds. For me, this has to be done by using our muscle contraction especially to the lower abdominal area that also helps to project the sound well. That makes sense?

VocalMomentsWithVell